using System;
using System.Collections;
using System.Collections.Generic;
using UnityEngine;

public static class OpExt
{
    public static string GetDescString(this Op op)
    {
        if (op == Op.Add)
        {
            return "+";
        }
        else if (op == Op.Sub)
        {
            return "-";
        }
        else
        {
            throw new Exception($"unknow op:{op}");
        }
    }
}
